Declare motion manger with core motion
var orientationLast = UIInterfaceOrientation(rawValue: 0)!
var motionManager: CMMotionManager?
Motion manager initialisation
and call this function in viewDidLoad
func initializeMotionManager() {
motionManager = CMMotionManager()
motionManager?.accelerometerUpdateInterval = 0.2
motionManager?.gyroUpdateInterval = 0.2
motionManager?.startAccelerometerUpdates(to: (OperationQueue.current)!, withHandler: {
(accelerometerData, error) -> Void in
if error == nil {
self.outputAccelertionData((accelerometerData?.acceleration)!)
}
else {
print("\(error!)")
}
})
}
To analyis accelerometers meter data
func outputAccelertionData(_ acceleration: CMAcceleration) {
var orientationNew: UIInterfaceOrientation
if acceleration.x >= 0.75 {
orientationNew = .landscapeLeft
print("landscapeLeft")
}
else if acceleration.x <= -0.75 {
orientationNew = .landscapeRight
print("landscapeRight")
}
else if acceleration.y <= -0.75 {
orientationNew = .portrait
print("portrait")
}
else if acceleration.y >= 0.75 {
orientationNew = .portraitUpsideDown
print("portraitUpsideDown")
}
else {
// Consider same as last time
return
}
if orientationNew == orientationLast {
return
}
orientationLast = orientationNew
}